• Three 184-pin DDR DIMM.
• Maximum memory size up to 3GB.
• Supports 2.5v DDR 200/266/333 SDRAM DIMM.
MSI Computer Corp. - Product
The information there shows that the board supports upto 3gb of PC2700 DDR333 memory. You can toss a pair of 1gb dimms in to see a boost there. But one look at the sig there shows that's about the limit you can do with some faster memory.
For performance memory newegg onliy sees a pair of 1gb kits(two 512s) of Kingston Hyper X memory seen at Newegg.com - Computer Parts, PC Components, Laptop Computers, Digital Cameras and more!
For 2gb memory kits of regular ram(two 1gb dimms) newegg has a set for PQI, Crucial, and Kingston. Newegg.com - Computer Parts, PC Components, Laptop Computers, Digital Cameras and more!
I ran a pair of Kingston ValueRam 1gb DDR400 dimms on the last build with good results and currently have a pair of DDR2 800 Hyper X dimms in use. While the performance memory has the lower latency simply moving up from 768mb or even 1gb to 2gb will be the thing to see the real gain there.